[1] Univ Sao Paulo, Fac Med FMUSP, BR-01246903 Sao Paulo, Brazil
[2] Princess Margaret Canc Ctr, Dept Support Care, Toronto, ON M5G 2M9, Canada
[3] Univ Toronto, Lawrence S Bloomberg Fac Nursing, Toronto, ON M5T 1P8, Canada
[4] Canc Care Ontario, Toronto, ON M5G 2L7, Canada
[5] Princess Margaret Canc Ctr, Dept Med Oncol & Hematol, Toronto, ON M5G 2M9, Canada
[6] Dalla Lana Sch Publ Hlth, Toronto, ON M5T 3M7, Canada
[7] Temerty Fac Med, Toronto, ON M5S 1A8, Canada
[8] Univ Toronto, Dept Med Biophys, Toronto, ON M5S 1A1, Canada
[9] Univ Calgary, Tom Baker Canc Ctr, Calgary, AB T2N 1N4, Canada